Before reaching the age of 20, Athanasius wrote a treatise entitled On the Incarnation, affirming and explaining that Jesus Christ was both God and Man. Athanasius fought consistently against Arianism all his life.

His Holiness Patriarch Kirill of Moscow and All Russia has congratulated the First Hierarch of the Russian Orthodox Church Outside of Russia, His Eminence Metropolitan Hilarion of Eastern America and New York on his 65th birthday